[c-nsp] Cisco 7200 AUX port pseudo-break problem

[Ted Mittelstaedt]

Hi Ed,

  The problem is that a Break signal isn't actually a real character.
The
following explains it more throughly with some suggested fixes:

http://www.cisco.com/warp/public/770/fn-tsbreak.html

Hope this helps!

Ted

>-----Original Message-----
>From: cisco-nsp-bounces at puck.nether.net
>[mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Ed Ravin
>Sent: Wednesday, August 24, 2005 8:38 AM
>To: cisco-nsp at puck.nether.net
>Subject: [c-nsp] Cisco 7200 AUX port pseudo-break problem
>
>
>On Wed, Aug 24, 2005 at 10:02:45AM +0200, Anton.Schweitzer at o2.com wrote:
>> can anyone send me a template for the settings to connect s
>SUN server to
>> a cisco terminal server
>
>Speaking of Sun consoles, I just ran into a new flavor of an
>old problem.
>
>I hooked up an x86 NetBSD system serial port to a Cisco 7206
>aux port, so I
>could telnet into the Cisco and get to the console of the NetBSD box.
>Works as planned, until I powered off the Cisco for some maintenance,
>and suddenly my pager began beeping.
>
>It turned out that powering down the Cisco simulated a BREAK signal
>on the serial port to the x86 box, and since we had enabled debugging
>in the kernel, it promptly fell into the debugger and stopped all
>activity.  Just like the Sun boxes used to do when I had used Cisco
>boxes as console servers for them oh so many years ago.
>
>Our other terminal server is a Baytech DS-RPC box that works fine,
>except it can't send a BREAK signal.  Does anyone know of hardware
>hacks or other cheap ways to avoid the pseudo-BREAK problem?
>
>	-- Ed
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